S = input() + ' '

t = ''
L = []
cnt = M = 0

for s in S:
    if s != 'ｗ' and cnt == 0:
        t += s
    elif s == 'ｗ':
        cnt += 1
    else:
        if cnt > M and t:
            M, L = cnt, []
        if cnt > 0:
            if cnt == M:
                L += [t]
            t, cnt = '', 0
        t += s

for i in L:
    print(i)